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Copying workload files to a virtual disk

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Title: Copying workload files to a virtual disk.
Abstract: The present invention is directed to a system and method for transferring workload files on a host to a Virtual Machine (VM) destination disk without the need for the VM to be running. This accomplished by creating a VM disk device interface to move data from the workload files to the VM destination disk. The VM disk device interface comprises a device driver to interact with the VM destination disk and destination access software utilizing standard operating system procedures to access the VM destination disk. ...


USPTO Applicaton #: #20090327632 - Class: 711162 (USPTO) - 12/31/09 - Class 711 
Electrical Computers And Digital Processing Systems: Memory > Storage Accessing And Control >Control Technique >Archiving >Backup

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The Patent Description & Claims data below is from USPTO Patent Application 20090327632, Copying workload files to a virtual disk.

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CROSS REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of priority of International Patent Application No. PCT/CA2008/001190 filed Jun. 25, 2008 which is incorporated herein by reference in its entirety.

FIELD OF THE INVENTION

Embodiments of the present invention relate to a system and method for transferring work load files on a host to a virtual machine (VM) destination disk without the need for the VM to be running.

BACKGROUND OF THE INVENTION

In a computing environment including virtual and real machines, improvements in disaster recovery, data backup, workload conversion or workload imaging can be achieved using virtual disks.

A workload comprises the operating system, data and software components necessary to run an application. A workload may run on one physical server where one physical server handles the workload. In a virtual environment many workloads may run in Virtual Machines (VMs) on a virtual server.

A workload comprises multiple files, referred to as workload files. In the case of disaster recovery, changes to workload files are incrementally made to a virtual disk on a virtual server. This concept is described in detail in U.S. Application Publication No. 2008/0033902, titled “A Method for Providing Live File Transfer Between Machines”, published Feb. 7, 2008, which is assigned to the owner of the owner of the present application and is included by reference. In the case of data backup workload files are copied to one or more virtual disks on a virtual server. With regard to workload conversion, a workload may be moved between physical servers, virtual servers and image servers. Workload conversion is described in detail in U.S. Patent Application Publication No. 2006/0089995, titled “System for Conversion Between Physical Machines, Virtual Machines and Machine Images”, published Apr. 27, 2006, which is assigned to the owner of the present application and is included by reference. Workload imaging applies to the case of creating an image of the workload for the purpose of storing the workload image and utilizing it to recreate the workload on a Virtual Machine (VM). A workload image is described in detail in the 2006/0089995 patent application. A workload image is not a functioning workload, but rather an image of the workload that can be instantiated when required.

There is a need for utilizing virtual disks to receive workload files for the purposes of disaster recovery, data backup, workload conversion or workload imaging in a manner that seamlessly integrates with the virtual disks. The present invention addresses this need.

SUMMARY

OF THE INVENTION

An embodiment of the present invention is directed to a method for transferring workload files on a host to a Virtual Machine (VM) destination disk without the need for the VM to be running, comprising the steps of: utilizing a bus driver to create a VM disk device interface; downloading said bus driver and said VM disk device interface to a VM server; and utilizing said bus driver and said VM disk device interface to transfer said workload files to said destination disk.

An embodiment of the present invention is also directed to a system for transferring workload files on a host to a Virtual Machine (VM) destination disk without the need for the VM to be running, comprising: a bus driver configured to create a VM disk device interface; means for downloading said bus driver and said VM disk device interface to a VM server; and said device driver and said VM disk device interface configured to transfer said workload files to said destination disk.

BRIEF DESCRIPTION OF THE DRAWINGS

For a better understanding of the present invention, and to show more clearly how it may be carried into effect, reference will now be made, by way of example, to the accompanying drawings which aid in understanding an embodiment of the present invention and in which:

FIG. 1 is a block diagram of the components of an embodiment of the present invention;

FIG. 2 is a block diagram expanding on the components of FIG. 1;

FIG. 3 is a flowchart of the steps of reading from workload files and writing to a VM destination disk;

FIG. 4 is a flowchart of the steps for creating a VM disk device interface; and

FIG. 5 is a block diagram of a system utilizing an embodiment of the invention.

DETAILED DESCRIPTION

OF EMBODIMENTS OF THE INVENTION

In the context of this description, a VM disk device interface is a software construct to which operations can be performed using standard disk functions in a manner that allows seamless integration with an application to provide services such as disaster recovery, data backup, workload conversion and workload imaging.

Referring to FIG. 1 a block diagram of the components of an embodiment of the present invention is shown. Application 12 may be any type of application that provides services including those mentioned in the preceding paragraph. Application 12 accesses workload files 16 in order to copy data from the workload files 16 to VM destination disk 18, a storage device. Application 12 utilizes VM disk device interface 14 to access destination 18. Application 12 may utilize supporting service 20 for administrative functions, for example preparing for the use of VM destination disk 18 by creating a VM with an empty VM destination disk 18.



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Managing metadata for data blocks used in a deduplication system
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Methods and systems for management of copies of a mapped storage volume
Industry Class:
Electrical computers and digital processing systems: memory
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stats Patent Info
Application #
US 20090327632 A1
Publish Date
12/31/2009
Document #
12489772
File Date
06/23/2009
USPTO Class
711162
Other USPTO Classes
718/1, 711E12001, 711E12103
International Class
/
Drawings
6


Device Driver
Errin
Operating System
Procedure
Running
Software
Standard


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